Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"thi lieu co snippets" » "thi lieu code snippets", "tai lieu co snippets", "thi lien co snippets", "thi dieu co snippets", "thi lieu so snippets", "thi lieu cong snippets", "thi lieu hoc snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("thi lieu co snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi lieu co snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( thi lieu co snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi lieu co snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.